//
//  main.cpp
//  预处理器
//
//  Created by linjinzhu on 2017/7/14.
//  Copyright © 2017年 linjinzhu. All rights reserved.
//

#include <iostream>

using namespace std;

int main(int argc, const char * argv[]) {

// ## 连接器

#define CONCAT(x,y) (x ## y)


    int xy = 1000;
    cout << CONCAT(x, y) << endl;

    cout << __FILE__ << endl;
    cout << __LINE__ << endl;
    cout << __DATE__ << endl;
    cout << __TIME__ << endl;
    return 0;
}
